Hiram w



June 2, 1925.

H. W. BLAISDELL VALVE Eilejuly, 26. 1922 Patentedllune L', 1925.

naamw. Buisman., or :uw xonx, N. Y.

Applioltion led Illy im. lerill l0. 77M

To all fwlwm it may concern: l

Be it known that I, Humm W. BLAIsnnLL, a citizen of the United `States, residing in the boron h of Manhattan, city, county, and State of ew York, have invented certain new and useful Improvements in Valves, of which the followin is a specification.

This invention re ates to valves for reguvlating the feed of steam 'to radiators and other steam-using apparatus.

`One of the obJects of the invent-ion is tov produce a simple, inexpensive, reliable valve .structure having a great range of regulation. Another object is to produce a valve device that can be cheaply made and readily substituted for the valves of existing struc- In the preferred manner of practicing the invention, the usual cylindrical plug or valve is detached from the bottom of the valve stem, and a new valve substituted, the new valve being a hollow cylinder, whose wall is helically slitted to form the porting; ribs being provided to retain the whorls. This valve may work in a throat of reduced diameter and increased length, having the form of a tube or lining forced into `the throat originally formed in the housing.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a'sectional elevation of the improvements substituted in a valve of' standard construction.

Figure 2 is a development of the helically slotted cylindrical valve. I

Figure 3 is a perspective view of the valve. lI

Figure 4t is a sectional plan taken at about the middle of the valve chamber.

In the usual construction, a chamber or housing 10 contains a valve, which works vertically in a throat 11, which is provided in the bottom of the housing; the adjustment of the valve being usually secured by a stem 12, carrying a hand-wheel 13, and having a portion 14 threaded into a cap 15, the latter threaded at 16 into the top of the housing, and carrying a gland 17 for the stem. To the bottom portion of the stem is usually attached an annular packing 18,

which screws down upon a seat 19 provided at the to ofthe throat 11. This packing 1s carrie in a knuckle 20, which is loosely connected to the stem in various ways, as, for example, by threading it at 21 upon a vsubstituted therefor a collar 22 which loosely surrounds'a boss 23 formed on the bottom of the vstem 12, said collar catching over a head 24 rovided on tlie stem under said boss. rom said knuckle usually extends downwardly a threaded stem 25, u n which is usually screwed a cylindrica plug or valve to tit in the throat 11. In practicing the present improvements 1n one way, the usual cylindrical plug or valve may be removed, and there may be ported vcylindrical shell or valve 26 of relatlvely small diameter, and working up and down in a c lindrical bushing or lining or throat) 2 inserted in said throat 11. aid bushing ma have great depth, for proper coaction wit i the valve, and it may have relatively small diameter, so asto find room within the to of the steam supply-pipe 28 upon whicli the valve housing is threaded. The diameter of the original throat 11 in the housing is usually greater than the internal diameter of said supply-pipe 28, but, by forming a head 29 upon said bushing, it may be made of sutlicient diameter to fill the original throat, said head being forced into the throat or otherwise rigidl secured.

The porting of the Lva ve is effected by slitting the same helically throughout, as at 30, thus forming the cylinder into a helix, the whorls of which may be connected together so as to be supported and retained 1n place by means of interior ribs 31, preferably vertical, and all integral with the helix. The cylinder may be cast with its ribs, and then the helical slit may be cut through the cylinder wall. The helix preferably forms a single thread, the same being formed by a single helical slot running around the cylinder from end to end.

When the handle 13 is screwed down, the packing 18 rests upon the original seat 19 or upon the top 32 of the inserted bush-ing or interior throat. Upon unscrewing the handle a trifle, the packing 18 will be lifted from the seat, and permit a slight feed of steam to the radiator, since some steam will find its way up around the sides of the cylindrical valve, which may be slightly loose in said bushing or throat 27. The handle 'will rise above the seat, thus affording a small passage for steam'directl through the valveinto the radiator. The elical slot Vll or `porting may beso narrow that only a very `little steam-1s admitted. Thus the radiator will be only moderately heated, even if the weather is moderately warm and the steam is of com aratively high ressure. More steam can t en be admitte if desired, by unscrewingthe valve further, so 4that the radiator may be mada as warm as desired; and by raising the valve as far as it will go, as in Figure 2,/a maximum feed of steam is secured. The' steam blows sidewise beneath .the packing, and hence does not destroy the same.

At the to of the cylinder or valve 26 is formed a ead 32, said head being 1nteriorly threaded at 33 to screw upon the pendent stem"`25, Figure 1. It is desired to carry the slitting or porting of the cyllnder up to a point close to the top thereof, as 'in Figure 3, this oint being above the bottom of the threa ed perforation 33 in said head. For this purpose, an interior nut 34 is cast centrally upon said head and depends within the cylinder, the diameter of the nut being small so as to leave a considerable clearance 35 around the nut for the passage of steam as it flows into the radiator.

Variations may be resorted to within the scope of the invention, and portionspof the im rovements may be used without others.

aving thus described my invention, I claim:

1. A steam regulating device, comprising a valve housin a lifting stem therein, a hollow cylindrical valve connected to the stem, and a throat in which said valve is adjustable up and down by means of said stem, said valve being helically slitted to form a porting, and also having integral interior ribs or connections to support the whorls. y

2. A steam regulating device, comprising a valve housing, a lifting stem therein, a hollow cylindrical valve connected to the stem, and a throat in which said valve is adjustable up and down by means of said stem, said valve being helically slitted to form a porting, and also having interior ribs or connections to support the whorls, said throat comprising a tube fitted tightly in said housing.

3. A steam regulating device, comprising la valve housing, having a seat surrounding the assage therethrough, a lifting stem in the ousing, a hollow cylindrical valveconnected to the stem, a throat in which said 4. In a steam regulating device,.the com binationyof a valve housing having a throat, a bushing secured in said throat, a hollow valve working longitudinall in said bushing, said valve being cylin rically ported, and a liftin stem to which said valve is attached, sai bushing being of a small diameter and .spaced from the wall of said housing to drop within the to of the steam supplydpipe to which the regu ating device is screwe 5. In a steam regulating device, the combination of a valve housin having a throat, a bushing secured in sai throat, a hollow cylindrical valve working longitudinally in said bushing, said valve being cylindrically ported, and a lifting stein to, which said valve is attached, said bushing being of a small diameter and spaced from the wall of said housing to drop `within the top of the steam supply pipe to which the regulatin device is screwed, and the head forme upon said bushing of suiicient diameter to fill the original throat in the housing.

6. A steam valve, comprising a housing and a valve therein, the valve comprising a hollow cylindrical body slit helically to form whorls, and means for connecting and retaining the whorls in place.

7. A steam valve comprising a housing and a valve therein, the valve comprising a hollow cylindrical body slit helically to form whorls, and means for connecting and retaining the whorls in place, said retaining means being in the from of ribs cast integra'lly with the cylinder.

8. A steam valve, comprising a housing and a valve therein, the valve comprising a hollow cylindrical body having a single helical slit running around the cylin er from end to end to form whorls, .and means f l r connecting and retaining the whorls in p ace.

9. A steam Valve, comprising a housing and a valve therein, the valve com rising a hollow cylindrical body slit helically to form whorls, means for connectin and retaining the whorls in place, sai housing having a seat, and a packing surrounding said cylinder and adapted to be pressed down uponthe seat.

10. As a new article of manufacture, an

adjustable steam valve, formed of a hollow cylinder-`helically slitted from end to end to form whorls, and means for connecting and retaining the whorls in place said retaining means being in the form oiZ ,ribs cast valve is adjustable up and down by means--integrmuith the cylinder.

of said stem, said valve being helically slitted to form a porting, and having integral valve formed of a hollow cvlinder helically interior ribs or connections to support the slitted from end to end. and integral means whorls, and a packing carried by said stem to connect the whorls together and hold above said-ported valve, and adapted to vbe them in place.

`iorceddown by the stem against 12. A steam regulating device,

compristo prevent leakage of steam.

ying a valve housing having a throat surrounded by a seat, a hollow cylindrical nipple, and being'slit helically from top to valve longitudinally adjustable in said bottom, and interior integral ribs u n said l0 throat, manually operable adjustingmeans valvel to connect the Whorls toget er and for said valve, packing upon said Valve, hold them in place.

adapted to be forced down uponsaid seat, y HIRAM W. BLAISDELL.l a nipple depending from said,I adjusting Witnesses: means, said valve having an interior nut, 'CATHERINE A. NEWELL,

whereby it is threaded upon said depending Y' EDITH B. LIBBEY. 

